Home / 120,780.84-181,088.64-61,501.80

Finding the Fourth Proportional to 120,780.84, 181,088.64 and 61,501.80

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Solution

The fourth proportional to 120,780.84, 181,088.64 and 61,501.80 is: 92,210.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,780.84 : 181,088.64 = 61,501.80 : x
  2. Step 2: Convert to fraction form
    120,780.84/181,088.64 = 61,501.80/x
  3. Step 3: Cross multiply
    120,780.84x = 181,088.64 × 61,501.80
  4. Step 4: Simplify right side
    120,780.84x = 11,137,277,319.55
  5. Step 5: Solve for x
    x = 11,137,277,319.55/120,780.84
  6. Step 6: Final answer
    x = 92,210.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.